CN108670326B - Liver and gall surgery traction device with multi-directional positioning function - Google Patents

Abstract

The invention discloses a multi-directional positioning hepatobiliary surgery traction device, which comprises a fixing device, a cover ring assembly and a traction assembly for pulling open tissues around an operation opening, wherein the cover ring assembly comprises operation cover cloth and a fixing ring, the operation cover cloth and the fixing ring are used for protecting a patient, the operation opening position is positioned, the fixing ring is fixedly connected with the fixing device, the traction component is connected with the fixing device in a sliding way, the fixing device comprises a support frame, a support table and a telescopic rod, the support frame is fixed on the operation table, the telescopic rod drives the traction component to lift up and down, so as to open the operation opening, an annular chute is arranged on the support table, the telescopic rod is connected with the annular chute in a sliding way, under the condition of small operation opening, the patient has a plurality of focuses, when other focuses need to be operated, the telescopic rod is rotated to change the traction direction of the traction device, and the telescopic rod is kept at the fixed position of the support table under the condition of no external force.

Description

Liver and gall surgery traction device with multi-directional positioning function

Technical Field

The invention relates to the field of medical equipment, in particular to a multi-directional positioning traction device for a hepatobiliary surgery.

Background

The hepatobiliary surgery is mainly used for treating hepatobiliary pancreatic tumor, cholelithiasis, portal hypertension and other diseases. In the current clinical treatment, when resection of liver tumor, hepatic cyst, gall bladder stone, tumor and the like is performed under a laparoscope, a surgical instrument is often needed to lift liver tissue or separate and draw focus and surrounding tissues. Need use the retractor device at this in-process, in order not to influence the field of vision of doctor in operation process, traditional retractor device adopts a plurality of retractors to pull the operation incision outwards towards different directions, wherein retractor one end and the fixed other end of platform carry out the hook to the operation incision and make its outwards expansion, current retractor generally adopts the nut to fix on the operation table when using, its fixed mode is comparatively complicated, troublesome poeration, in addition because the fixed position of operation table is limited, its fixed mode is limited, it compromises its connection fastening degree when adjusting the operation field of vision that can not be fine, when needing to adjust operation open-ended stretch-draw degree or its open-ended direction of traction, need the reposition retractor, its adjustment is comparatively loaded down with trivial details, consequently, need a suitable retractor can avoid the emergence of above-mentioned condition at present, increase operation safety.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a multi-directional positioning traction device for hepatobiliary surgery, which can be adjusted for different individuals after being fixed and positioned, so that the operation visual field of a doctor is ensured, and the safety of hepatobiliary surgery is improved.

In order to achieve the purpose, the invention provides the following technical scheme: a multi-directional positioning liver and gall surgery traction device comprises a fixing device, a traction assembly and a cover ring assembly, wherein the cover ring assembly comprises a surgery cover cloth and a fixing ring, an opening is formed in the surgery cover cloth, the fixing ring is detachably connected to the opening and is used for supporting the opening of the surgery cover cloth, the fixing ring is fixedly connected with the fixing device and is in sliding connection with the fixing device, the fixing device comprises a support frame, a support table and a telescopic rod, the support frame is fixedly connected with an operating table, the support table is arranged at the upper end of the support frame, an annular sliding groove is formed in the support table, the telescopic rod is in sliding connection with the annular sliding groove, the telescopic rod drives the traction assembly to lift up and down, the traction assembly comprises a middle section gripper and a connecting arm for drawing the surgery opening, an annular supporting groove is formed in the fixing ring, the gripper extends into the fixed ring, the lower end of the telescopic rod is provided with a second sliding block, the second sliding block is connected with the annular sliding groove in a sliding manner, the upper end of the annular sliding groove is provided with a mutually communicated locking groove for locking the second sliding block, a third spring part is arranged in the annular sliding groove and used for supporting the second sliding block, the third spring part keeps the second sliding block limited in the locking groove, the locking groove and the annular sliding groove are concentrically arranged, the groove diameter of the annular sliding groove is larger than that of the locking groove, the groove wall of the locking groove is provided with a plurality of rectangular grooves which are arranged at equal intervals, the rectangular grooves are mutually communicated with the annular sliding groove, the second sliding block is provided with a locking block, when the locking block is limited in the locking groove, the second sliding block is fixedly positioned in the locking groove, when the second sliding block is pressed down to the annular sliding groove, the second sliding block freely rotates in, the base is provided with the holding tank, and the slide bar slides with the holding tank and is connected, and the slide bar upper end is provided with the seat that slides, linking arm and the seat sliding connection that slides are equipped with the latch fitting on the linking arm, be equipped with the catching groove on the base, the mutual lock joint of latch fitting and catching groove, the base is provided with first locking subassembly, and this first locking subassembly is used for controlling the height of slide bar.

As a further improvement of the invention, an annular abutting plate is arranged in the annular sliding groove, the annular abutting plate is arranged at the upper end of the second spring part and is abutted against the second spring part, the second sliding block is connected with the annular abutting plate in a sliding manner, an annular ball groove is arranged on the annular abutting plate, a plurality of balls are arranged in the annular ball groove, and the balls are in rolling contact with the first sliding block.

As a further improvement of the invention, the connecting arm is provided with a second through groove, the fastener comprises an installation rod and a flange, the installation rod is connected with the second through groove in a sliding mode, the flange is clamped with the fastener groove, and the telescopic rod extends towards one side of the connecting arm to be provided with a connecting plate which is used for bearing the flange.

as a further improvement of the invention, an annular abutting plate is arranged in the annular sliding groove, the annular abutting plate is arranged at the upper end of the third spring part and is abutted against the third spring part, the second sliding block is connected with the annular abutting plate in a sliding manner, an annular ball groove is arranged on the annular abutting plate, a plurality of balls are arranged in the annular ball groove, and the balls are in rolling contact with the first sliding block.

As a further improvement of the invention, the first locking component comprises a limiting plate and a bolt, the inner arm of the containing groove is provided with an axial first installing groove, a first spring part is arranged on the first installing groove, the limiting plate is elastically connected with the first installing groove through the first spring part, a bounce clearance is arranged between the limiting plate and the first installing groove, the outer wall of the base is provided with a third through groove which is mutually communicated with the first installing groove, the bolt is in sliding connection with the third through groove, the bolt comprises a handle which is arranged at one end extending out of the third through groove, the bolt is inserted into the bounce clearance to limit the bounce of the limiting plate, when the bolt is mutually abutted with the limiting plate, the limiting plate limits the slippage of the sliding rod, the outer peripheral wall of the sliding rod is provided with a first tooth block, the limiting plate is provided with a plurality of second tooth blocks which are equidistantly arranged along the axial direction, when the sliding rod slides up and down, the first tooth blocks bounce between the adjacent second tooth blocks.

As a further improvement of the invention, the lower end of the fastening groove is provided with a first through groove communicated with the fastening groove, a second locking component is arranged in the first through groove and used for limiting the fastening piece to slide out, the fastening block is provided with a groove towards one side of the first through groove, the groove is used for inserting the second locking component, the second locking component is connected with the first through groove in a sliding way and linked with the first locking component, the second locking component comprises an insertion rod which slides in the first through groove, the insertion rod is provided with a linkage block which is arranged at the lower end of the insertion rod, when the insertion rod is inserted into the bounce gap, the linkage block drives the insertion rod to slide towards one side of the fastening groove and be inserted into the groove, the second locking component also comprises a second spring part and a mounting plate, one end of the second spring part is connected with the mounting plate, the other end of the second spring part is connected with the insertion rod, the mounting plate is arranged at the, one end of the inserted link close to the buckle slot is provided with a third inclined plane, and the third inclined plane faces to one side of the opening of the buckle slot.

as a further improvement of the invention, the sliding seat is provided with a first sliding groove, the peripheral wall of the connecting arm is axially provided with a sliding block, the sliding block is connected with the first sliding groove in a sliding manner, and the sliding block is hinged with the connecting arm.

As a further improvement of the invention, the base is provided with a clamping groove which is used for fastening the handle, the clamping groove is vertically arranged with the first through groove, and the clamping groove is communicated with the first through groove.

As a further improvement of the invention, the gripper is in threaded connection with the connecting arm, the gripper comprises an upper hook plate and a lower hook plate which are bent downwards, the upper hook plate and the lower hook plate are clamped with each other, a torsion spring is arranged between the upper hook plate and the lower hook plate, the upper hook plate and the lower hook plate are hinged through the torsion spring, and the lower hook plate and the upper hook plate are attached to each other when being clamped in a closed manner.

the invention has the beneficial effects that: when in use, the fixing device is fixed on the operation bed frame, the operation cover cloth covers the patient body, the fixing ring is aligned with the position of the operation opening, the fixing ring is fixed and suspended at the upper end of the operation opening through the fixing device, the operation cover cloth is detachably connected with the fixing ring, so that the visual angle of a doctor is wide, in addition, the fixing ring is arranged at the upper end of the operation opening to be conveniently used as a supporting point of various operation instruments, so that the doctor is more stable in the operation process, when the size of the operation opening needs to be adjusted, the lifting telescopic rod drives the traction assembly to lift up and down, when the telescopic rod drives one end of the connecting arm to lift up, as the middle section of the connecting arm supports and abuts against the fixing ring, the tongs outwards and downwards pulls tissues around the operation opening to realize the fine adjustment of the size of the operation opening, under the condition that the operation opening is small, the patient body is provided, come the tractive direction in order to change tractive device through rotating the telescopic link, the telescopic link is under the effect of not having the external force, the third spring part keeps the telescopic link to be located locking groove position, the locking piece that sets up on the second slider is spacing in the rectangular channel on the locking groove wall, the telescopic link keeps the fixed position at a supporting bench, through pushing down the telescopic link when needing to adjust tractive device's angle, its second slider pushes down in the annular spout, locking groove removes the locking to the second slider, drive telescopic link slippage to preset position when pushing down, through the evenly distributed rectangular channel on the cell wall of locking groove, after the telescopic link to locking groove is kick-backed in the third spring part, the telescopic link location, it adjusts simple structure and convenient, make doctor can be quick in the operation process adjust, in order to reduce operation time, and can realize accurate positioning.

drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the mounting structure of the fixing device and the pulling assembly of the present invention;

FIG. 3 is a cross-sectional view of the mounting structure of the securing device and pulling assembly of the present invention;

FIG. 4 is a state diagram with the first and second locking assemblies unlocked;

FIG. 5 is a state diagram of the first locking assembly and the second locking assembly locked;

FIG. 6 is a schematic view of an installation structure of the connecting arm and the sliding seat;

FIG. 7 is a schematic view of an installation structure of the second slider and the annular chute;

FIG. 8 is a schematic view of a locking groove.

a1, fixing device; a2, a traction assembly; a3, a support frame; a4, a telescopic rod; a5, a hand grip; a6, connecting arm; a7, base; a8, a sliding rod; a9, accommodating grooves; a10, a sliding seat; a11, a fastener; a12, a buckle groove; a13, an upper hook plate; a14, a lower hook plate; a15, torsion spring; a16, a buffer rubber strip; a17 and a second through groove; a18, mounting rods; a19, flange; a20, connecting plate; b1, a first locking component; b2 and a limiting plate; b3, a bolt; b4, a first mounting groove; b5, a first spring member; b6, bounce clearance; b7 and a third through groove; b8, a handle; b9, a first tooth block; b10, a second tooth block; b11, a first through groove; b12, a groove; b13, inserted bar; b14, a linkage block; b15, a second spring member; b16, mounting plate; b17, a first inclined surface; b18, a first chute; b19, a slide block; b20, a clamping groove;

c1, shroud ring assembly; c2, surgical drape; c3, fixing ring; c4, opening;

d1, a support table; d2, annular chute; d3, annular support groove; d4, a second slider; d5, locking groove; d6, a third spring member; d7, rectangular groove; d8, locking piece; d9, annular resisting plate; d10, annular ball groove; d11, balls.

Detailed Description

The invention will be further described in detail with reference to the following examples, which are given in the accompanying drawings.

referring to fig. 1 to 8, the multi-directional positioning traction device for hepatobiliary surgery disclosed in this embodiment includes a fixing device a, a traction assembly a, and a cover assembly c, where the cover assembly c includes a surgical cover cloth c and a fixing ring c, the surgical cover cloth c is provided with an opening c, the fixing ring c is detachably connected to the opening c, the fixing ring c is used to support the opening c of the surgical cover cloth c, the fixing ring c is fixedly connected to the fixing device a, the traction assembly a is slidably connected to the fixing device a, the fixing device a includes a support frame a, a support table d and a telescopic rod a, the support frame a is fixedly connected to the operating table a, the support table d is arranged at the upper end of the support frame a, the support table d is provided with an annular chute d, the telescopic rod a is slidably connected to the annular chute d, the telescopic rod a drives the traction assembly a to move up and down, the traction assembly a, an annular supporting groove d3 is formed in the fixing ring c3, one end of the connecting arm a6 is slidably connected with the telescopic rod a4, the middle section of the connecting arm a6 is slidably connected with the annular supporting groove d3, the hand grip a5 extends into the fixing ring c 5, the lower end of the telescopic rod a5 is provided with a second sliding block b5, the second sliding block b5 is slidably connected with the annular sliding groove d5, the upper end of the annular sliding groove d5 is provided with a mutually communicated locking groove d5, the locking groove d5 is used for locking the second sliding block b5, the annular sliding groove d5 is internally provided with a third spring element d5, the third spring element d5 is used for supporting the second sliding block b5, the locking groove d5 is used for keeping the second sliding block b5 limited in the locking groove d5, the locking groove d5 is concentrically arranged with the annular sliding groove d5, the groove diameter of the annular sliding groove d5 is larger than that of the locking groove d5, a plurality of rectangular grooves d5 which are arranged at equal intervals, and are mutually communicated, the second sliding block b19 is provided with a locking block d8, when the locking block d8 is limited in the locking groove d5, the second sliding block b19 is fixedly positioned in the locking groove d5, when the second sliding block b19 is pressed down to the annular sliding groove d2, the second sliding block b19 freely rotates in the annular sliding groove d2, the telescopic rod a4 comprises a base a7 and a sliding rod a8, the base a7 is provided with an accommodating groove a9, the sliding rod a8 is in sliding connection with the accommodating groove a9, the sliding rod a8 is provided with a sliding seat a10 at the upper end, the connecting arm 6 is in sliding connection with the sliding seat a10, the connecting arm a6 is provided with a buckle connector a11, the base a7 is provided with a12, the buckle connector a11 is buckled with the buckle groove a12, the base a7 is provided with a first locking assembly b1, and the first locking assembly b1 is used for controlling the height of the sliding rod a 8.

When the surgical instrument is used, the fixing device a1 is fixed on a surgical bed frame, the surgical cover cloth c2 is covered on a patient, the fixing ring c3 is aligned with the surgical opening c4, the fixing ring c3 is fixedly suspended at the upper end of the surgical opening c4 through the fixing device a1, the surgical cover cloth c2 is detachably connected with the fixing ring c3, so that the visual angle of a doctor is wide, in addition, the fixing ring c3 is arranged at the upper end of the surgical opening c4 to be conveniently used as a supporting point of various surgical instruments, so that the doctor is more stable in the surgical process, when the size of the surgical opening c4 needs to be adjusted, the lifting telescopic rod 4 drives the traction component a 68623 to lift up and down, when the telescopic rod a4 drives one end of the connecting arm a 638 to lift up, as the middle section of the connecting arm a6 is supported and abutted against the fixing ring 35c 42, the hand grip a5 pulls tissues around the surgical opening outwards and downwards to realize fine adjustment of the size of the surgical opening c, when other focuses need to be operated, the pulling direction of the pulling device is changed by rotating the telescopic rod a4, the telescopic rod a4 is under the condition of no external force, the third spring part d6 keeps the telescopic rod a4 at the position of the locking groove d5, the locking block d8 arranged on the second sliding block b19 is limited in the rectangular groove d7 on the groove wall of the locking groove d5, the telescopic rod a4 is kept at the fixed position of the supporting table d1, when the angle of the pulling device needs to be adjusted, the telescopic rod a4 is pressed downwards by pressing the telescopic rod a4, the second sliding block b19 is pressed into the annular sliding groove d2, the locking groove d5 releases the locking of the second sliding block b19, the telescopic rod a4 is driven to slide to the preset position while pressing downwards, the rectangular grooves d7 are uniformly distributed on the groove wall of the locking groove d5, after the telescopic rod a4 is rebounded to the locking groove d5 by the third spring part d6, the telescopic rod a4 is positioned, so that the doctor can quickly adjust in the operation process to reduce the operation time and realize accurate positioning.

As an improved specific embodiment, an annular abutting plate d9 is arranged in the annular sliding groove d2, an annular abutting plate d9 is arranged at the upper end of the third spring member d6 and abuts against the third spring member d6, the second sliding block b19 is slidably connected with the annular abutting plate d9, an annular ball groove d10 is arranged on the annular abutting plate d9, a plurality of balls are arranged in the annular ball groove d10, and the balls are in rolling contact with the first sliding block b 19.

Through set up annular buttressing board d9 in annular spout d2 for second slider b19 atress is more even, and is provided with the ball between second slider b19 and annular buttressing board d9, has reduced sliding friction power, makes telescopic link a4 slide more smoothly.

In a modified embodiment, the connecting arm a6 is provided with a second through-slot a17, the fastener a11 includes a mounting rod a18 and a flange a19, the mounting rod a18 is slidably connected with the second through-slot a17, the flange a19 is engaged with the fastener a12, the telescopic rod a4 is provided with a connecting plate a20 extending to the side of the connecting arm a6, and the connecting plate a20 is used for receiving the flange a 19.

The snap-fastener a11 is arranged to be slidably connected with the connecting arm a6, and the lower end of the snap-fastener a11 is provided with a bearing connecting plate a20, so that when the traction angle of the connecting arm a6 is adjusted, the angle of the snap-fastener a11 can be finely adjusted, and the snap-fastener a11 is always kept aligned with the snap-fastener groove a12, so that the snap-fastener a11 and the snap-fastener groove a12 are clamped with each other after the connecting arm a6 slides to the proper position.

As an improved specific embodiment, the first locking component b comprises a limiting plate b and a plug pin b, an inner arm of the containing groove a is provided with an axial first installing groove b, a first spring part b is arranged on the first installing groove b, the limiting plate b is elastically connected with the first installing groove b through the first spring part b, a bounce clearance b is arranged between the limiting plate b and the first installing groove b, a third through groove b is arranged on the outer wall of the base a and is mutually communicated with the first installing groove b, the plug pin b is in sliding connection with the third through groove b, one end of the plug pin b extending out of the third through groove b is provided with a handle b, the plug pin b is inserted into the bounce clearance b to limit the bounce of the limiting plate b, when the plug pin b is mutually abutted against the limiting plate b, the limiting plate b limits the sliding rod a to slide, the outer peripheral wall of the sliding rod a is provided with a first tooth block b, the limiting plate b is provided with a plurality of, the first tooth block b9 is meshed with a plurality of second tooth blocks b10, and when the sliding rod a8 slides up and down, the first tooth block b9 bounces between the adjacent second tooth blocks b 10.

the locking structure of the telescopic rod a4 is convenient to operate, when the height of the telescopic rod a4 needs to be adjusted, the pin b3 slides downwards, the interference limitation between the pin b3 and the limit plate b2 is removed, when the sliding rod a8 is pulled to slide, the limit plate b2 bounces in the first mounting groove b4, the first tooth block b9 on the sliding rod a8 bounces among a plurality of adjacent second tooth blocks b10, when the sliding rod a8 needs to be positioned, the pin b3 slides to the bounce gap b6 between the limit plate b2 and the first mounting groove b4 along the third through groove b7, the limit plate b2 bounces are limited, and the first tooth block b9 limits the adjacent second tooth blocks b10, so as to lock the sliding rod a 8.

as a modified embodiment, the lower end of the buckle slot a12 is provided with a first through slot b11 communicated with the buckle slot a, the first through slot b11 is internally provided with a second locking assembly used for limiting the sliding out of the buckle piece a11, the side of the buckle block facing the first through slot b11 is provided with a groove b12, the groove b12 is used for inserting the second locking assembly, the second locking assembly is connected with the first through slot b11 in a sliding way, the second locking assembly is interlocked with the first locking assembly b1, the second locking assembly comprises a plug rod b13, the plug rod b13 slides in the first through slot b11, the plug pin b3 is provided with a linkage block b14, the linkage block b14 is arranged at the lower end of the plug rod b13, when the plug rod b3 is inserted in the bounce gap b6, the linkage block b14 drives the plug rod b13 to slide towards the side of the buckle slot a12 and insert into the groove b12, the second locking assembly further comprises a second spring element 12 b12 and a mounting plate 12 b12 and a spring element 12 is connected with the mounting plate 12, the other end is connected with a plug rod b13, a mounting plate b16 is arranged at the upper end of the linkage block b14 and is abutted against the linkage block b, and a third inclined surface is arranged at one end of the plug rod b13 close to the buckle groove a12 and faces to the side of an opening c4 of the buckle groove a 12.

The traction assembly a2 is locked after sliding to the side of the operating table in place by arranging the second locking assembly, the traction assembly a2 is prevented from sliding in the operation process, the second locking assembly and the first locking assembly b1 are arranged to be linked, so that the traction assembly a2 can be adjusted to be in place at one time, when the traction assembly a2 is firstly pulled to be in place, the buckling piece a11 arranged on the connecting arm a6 is buckled in the buckling groove, after the height is adjusted to be in place, the bolt b3 is plugged in the bouncing gap b6, and meanwhile, the linking block b14 integrally arranged with the bolt b3 drives the mounting plate b16 to push the inserting rod b13 into the groove b12 of the buckling block, the buckling block is prevented from being separated from the buckling groove a12, and the traction assembly a2 is firmly positioned, so that the operation is ensured to be safe.

As an improved specific embodiment, the sliding seat a10 is provided with a first sliding groove b18, the outer peripheral wall of the connecting arm a6 is provided with a sliding block b19 in the axial direction, the sliding block b19 is connected with the first sliding groove b18 in a sliding manner, and the connecting arm a6 is stable in the sliding process.

As a modified specific embodiment, the base a7 is provided with a clip groove b20, the clip groove b20 is used for fastening the handle b8, the clip groove b20 is vertically arranged with the first through groove b11, the clip groove b20 is communicated with the first through groove b11, the clip groove b20 is arranged at a height level with the handle b8 when the pin b3 is inserted into the bounce gap b6, and when the base a7 is used, the pin b3 is inserted into the bounce gap b6, the handle b8 is rotated into the clip groove b20 to prevent the pin b3 from being pulled out.

As a modified specific embodiment, the hand grip a5 is in threaded connection with the connecting arm a6, the hand grip a5 includes an upper hook plate a13 and a lower hook plate a14 which are bent downwards, the upper hook plate a13 and the lower hook plate a14 are clamped with each other, a torsion spring a15 is arranged between the upper hook plate a13 and the lower hook plate a14, the upper hook plate a13 and the lower hook plate a14 are hinged through the torsion spring a15, and the lower hook plate a14 and the upper hook plate a13 are attached to each other when clamped in a closed state.

the hand grip a5 is arranged to be a clamping structure, which is different from the existing hook structure that the hooked prick needs to be punctured into the tissue structure to reduce the further damage to the body tissue of the patient, the hand grip a5 is arranged to be the bent upper hook plate a13 and the bent lower hook plate a14, when the hand grip a5 does not need to be clamped and closed, part of the tissue can be pulled, and the switching of multiple purposes is realized.

the above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (7)

1. the utility model provides a hepatobiliary surgery tractive device of many ways location which characterized in that: comprises a fixing device (a1), a traction assembly (a2) and a cover ring assembly (c1), wherein the cover ring assembly (c1) comprises surgical cover cloth (c2) and a fixing ring (c3), an opening (c4) is formed in the surgical cover cloth (c2), the fixing ring (c3) is detachably connected to an opening (c4), the fixing ring (c3) is used for supporting the opening (c4) of the surgical cover cloth (c2), and the fixing ring (c3) is fixedly connected with the fixing device (a1),

Traction assembly (a2) and fixing device (a1) sliding connection, fixing device (a1) includes support frame (a3), supporting bench (d1) and telescopic link (a4), support frame (a3) and operating table fixed connection, supporting bench (d1) set up in support frame (a3) upper end, be provided with annular spout (d2) on supporting bench (d1), telescopic link (a4) and annular spout (d2) sliding connection,

The traction component (a2) is driven by the telescopic rod (a4) to lift up and down, the traction component (a2) comprises a hand grip (a5) for pulling a surgical opening (c4) and a connecting arm (a6), an annular supporting groove (d3) is formed in the fixing ring (c3), one end of the connecting arm (a6) is connected with the telescopic rod (a4) in a sliding mode, the middle section of the connecting arm (a6) is connected with the annular supporting groove (d3) in a sliding mode, the hand grip (a5) extends into the fixing ring (c3),

The lower end of the telescopic rod (a4) is provided with a second sliding block (d4), the second sliding block (d4) is in sliding connection with an annular sliding groove (d2), the upper end of the annular sliding groove (d2) is provided with a mutually-communicated locking groove (d5), the locking groove (d5) is used for locking the second sliding block (d4), a third spring part (d6) is arranged in the annular sliding groove (d2), the third spring part (d6) is used for supporting the second sliding block (d4), the third spring part (d6) keeps the second sliding block (d4) limited in the locking groove (d5),

The locking groove (d5) and the annular sliding groove (d2) are concentrically arranged, the groove diameter of the annular sliding groove (d2) is larger than that of the locking groove (d5), the groove wall of the locking groove (d5) is provided with a plurality of rectangular grooves (d7) which are arranged at equal intervals, the rectangular grooves (d7) and the annular sliding groove (d2) are communicated, the second sliding block (d4) is provided with a locking block (d8), when the locking block (d8) is limited in the locking groove (d5), the second sliding block (d4) is fixedly positioned in the locking groove (d5), and when the second sliding block (d4) is pressed down to the annular sliding groove (d2), the second sliding block (d4) freely rotates in the annular sliding groove (d2),

telescopic link (a4) includes base (a7) and slide bar (a8), base (a7) is provided with holding tank (a9), slide bar (a8) slides with holding tank (a9) and is connected, slide bar (a8) upper end is provided with slide seat (a10), linking arm (a6) and slide seat (a10) sliding connection, be equipped with fastener (a11) on linking arm (a6), be equipped with catching groove (a12) on base (a7), fastener (a11) and catching groove (a12) interlock,

the base (a7) is provided with a first locking component (b1), the first locking component (b1) is used for controlling the height of the sliding rod (a8),

The connecting arm (a6) is provided with a second through groove (a17), the fastener (a11) comprises a mounting rod (a18) and a flange (a19), the mounting rod (a18) is in sliding connection with the second through groove (a17), the flange (a19) is clamped with the fastener (a12), the telescopic rod (a4) extends to one side of the connecting arm (a6) and is provided with a connecting plate (a20), and the connecting plate (a20) is used for bearing the flange (a 19).

2. The multi-directional positioning hepatobiliary surgery distraction device of claim 1, wherein: the annular sliding groove (d2) is internally provided with an annular abutting plate (d9), the annular abutting plate (d9) is arranged at the upper end of a third spring piece (d6) and is abutted against the upper end of the third spring piece, the second sliding block (d4) is in sliding connection with the annular abutting plate (d9), the annular abutting plate (d9) is provided with an annular ball groove (d10), a plurality of balls are arranged in the annular ball groove (d10), and the balls are in rolling contact with the second sliding block (d 4).

3. The multi-directional positioning hepatobiliary surgery distraction device of claim 2, wherein: the first locking assembly (b1) comprises a limit plate (b2) and a bolt (b3), the inner arm of the accommodating groove (a9) is provided with an axial first mounting groove (b4), the first mounting groove (b4) is provided with a first spring member (b5), the limit plate (b2) is elastically connected with the first mounting groove (b 28) through the first spring member (b5), a bounce gap (b6) is formed between the limit plate (b2) and the first mounting groove (b4), the outer wall of the base (a7) is provided with a third through groove (b7), the third through groove (b7) is communicated with the first mounting groove (b4), the bolt (b3) is slidably connected with the third through groove (b7), one end of the bolt (b7) extending out of the third through groove (b7) is provided with a handle (b7) which abuts against the limit pin (b7) when the bolt (b7) is inserted into the bounce gap (b7), and the limit plate 7), the limiting plate (b2) limits the sliding of the sliding rod (a8),

Be provided with first tooth piece (b9) on slide bar (a8) periphery wall, it has a plurality of second tooth piece (b10) to arrange along holding tank (a9) axial direction equidistance on limiting plate (b2), first tooth piece (b9) and a plurality of second tooth piece (b10) intermeshing, when slide bar (a8) slided from top to bottom, first tooth piece (b9) bounced between adjacent second tooth piece (b 10).

4. The multi-directional positioning hepatobiliary surgery distraction device of claim 3, wherein: the lower end of the buckle slot (a12) is provided with a first through slot (b11) communicated with the buckle slot, a second locking component is arranged in the first through slot (b11) and used for limiting a buckle piece (a11) to slide out, one side, facing the first through slot (b11), of the buckle piece (a11) is provided with a groove (b12), the groove (b12) is used for inserting the second locking component, the second locking component is in sliding connection with the first through slot (b11), the second locking component is in mutual linkage with the first locking component (b1), the second locking component comprises a plug rod (b13), the plug pin (b3) is provided with a linkage block (b14), the linkage block (b14) is arranged at the lower end of the plug rod (b13), and when the plug pin (b3) is inserted into a bouncing gap (b6), the linkage block (b14) drives the plug pin (b3) to slide towards one side of the buckle slot (a12),

The second locking subassembly still includes second spring part (b15) and mounting panel (b16), mounting panel (b16) is connected to second spring part (b15) one end, and inserted bar (b13) is connected to the other end, mounting panel (b16) set up link block (b14) upper end and contradict with it, inserted bar (b13) are close catching groove (a12) one end and are provided with first inclined plane (b17), and this first inclined plane (b17) is towards catching groove (a12) opening (c4) one side.

5. The multi-directional positioning hepatobiliary surgery distraction device of claim 4, wherein: the sliding seat (a10) is provided with a first sliding groove (b18), the outer peripheral wall of the connecting arm (a6) is axially provided with a first sliding block (b19), and the first sliding block (b19) is in sliding connection with the first sliding groove (b 18).

6. the multi-directional positioning hepatobiliary surgery distraction device of claim 5, wherein: the base (a7) is provided with a clamping groove (b20), the clamping groove (b20) is used for buckling a handle (b8), the clamping groove (b20) and the second sliding groove are vertically arranged, and the clamping groove (b20) is communicated with the second sliding groove.

7. The multi-directional positioning hepatobiliary surgery distraction device of claim 1, wherein: grab hand (a5) and linking arm (a6) threaded connection, grab hand (a5) including the last board (a13) and the lower board (a14) of colluding of buckling down, should go up and collude board (a13) and collude board (a14) centre gripping each other down, it is provided with torsional spring (a15) to go up between board (a13) and the lower board (a14) of colluding, should go up and collude board (a13) and collude board (a14) and articulate through torsional spring (a15) down, collude board (a14) and last board (a13) and laminate each other when closing the centre gripping down.